Patch from Joel Burton fixing iteration of dictionary items for Py3

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73826 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Move the rest of the EVT_TEXT binders to the textctrl module.

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73827 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
a couple more Phoenix changes for wx.lib.masked

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73828 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Document changes to old properties in KeyEvent, ListEvent and ListItem

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73829 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add pubsub unittests, adapted by Werner

git-svn-id: http://svn.wxwidgets.org/svn/wx/wxPython@73830 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775